I bought a powered sub, now I'm planning how to wire it in. It accepts high or low level inputs, so I'm debating whether to take the signal from the speaker wires going into the current little subs, or maybe from the low level inputs to the Bose amp. Does Bose do anything weird to the bass signal going to the subs? Attenuate it as volume rises? I don't know if it's high passed, or band passed either. Do they cut out the very low notes to protect those little 5" subs? Either way, I'll need to know where that amp is, and how to get to it if possible.